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Table Of Contents
Introduction to Storage 1
vSphere supports various storage options and functionalities in traditional and software-defined storage
environments. A high-level overview of vSphere storage elements and aspects helps you plan a proper
storage strategy for your virtual data center.
This chapter includes the following topics:
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Traditional Storage Virtualization Models
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Software-Defined Storage Models
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vSphere Storage APIs
Traditional Storage Virtualization Models
Generally, storage virtualization refers to a logical abstraction of physical storage resources and
capacities from virtual machines and their applications. ESXi provides host-level storage virtualization.
In vSphere environment, a traditional model is built around the following storage technologies and ESXi
and vCenter Server virtualization functionalities.
Local and Networked
Storage
In traditional storage environments, the ESXi storage management process
starts with storage space that your storage administrator preallocates on
different storage systems. ESXi supports local storage and networked
storage.
See Types of Physical Storage.
Storage Area Networks A storage area network (SAN) is a specialized high-speed network that
connects computer systems, or ESXi hosts, to high-performance storage
systems. ESXi can use Fibre Channel or iSCSI protocols to connect to
storage systems.
See Chapter 3 Overview of Using ESXi with a SAN.
Fibre Channel Fibre Channel (FC) is a storage protocol that the SAN uses to transfer data
traffic from ESXi host servers to shared storage. The protocol packages
SCSI commands into FC frames. To connect to the FC SAN, your host
uses Fibre Channel host bus adapters (HBAs).
See Chapter 4 Using ESXi with Fibre Channel SAN.
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